David thompson



(No Model.)

D. THOMPSON.

FLUSHING VALVE.

No. 249,696. Patented N0v'.15,1881,-

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NITED STATES PATENT QEEICE.

DAVID THOMPSON, OF LEEDs, COUNTY OF YORK, ENGLAND, ASSIGNOR TO THE J. L.MOTT IRON woEKs, OF NEW YORK, N. Y.

FLUSHlNG-VALVE.

SPECIFICATION forming part of Letters Patent No. 249,696, dated November15, 1881.

Application filed September 10, 1881. (No model.) Patented in EnglandJuly 21, 1879.

To all whom it may concern:

Be it known that I, DAVID THOMPSON, of Leeds, in the county of York,England, have invented a new and useful Improvement in Flushing-Valves,of which the following is a full, clear, and exact description.

The object of my invention is to furnish a flushing-valve for use withwater-closets and at other places, combining simplicity and cerro taintyof action in the supply of a definite and exact quantity of water eachtime the handle is lifted, whatever the extent, height, or time oflifting may be, and the prevention of any increased supply, however longthe handle may be held up.

The invention consists in the combination, with a valve, of a float andratchet, whereby the closing movement of the valve is governed, ashereinafter described and claimed.

Reference is to he had to the accompanying drawings,formii.ig part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a perspective view of the valve in its closed position. Fig.2 is a sectional side view of the same in the open position, and- Fig.3is a side view of the valve in the position as closed by the action ofthe float.

In practice I employ an inner cistern or boot .0 for containing thequantity of water to be discharged at each flushing. At the bottom ofthis boot (shown at A) is fitted the valve and its mechanism.

a is the valve-seat, fixed around an opening 5 in the bottom of the bootA.

b b are vertical rods, fixed to the valve-seat at opposite sides, andconnected at their upper ends by a cross-bar, 0, so as to form a frameforcarrying the valve mechanism.

01 is the valve on the end of a stem, 0, that engages the rods 1) bbylugs ff, so that the valve and stem are guided by the rods in theirvertical movement.

9 g areratchet-teeth formed at the upper end 5 of stem 0.

his a slide engaging the rods 1) by lugs, and t is a rod extending fromthe slide through the cross-bar c. To this rod i thehandle by which thevalve is opened is to be connected.

it is an arm pivoted on the slide h, and formed at its lower end withratchet-teeth, which engage the teeth 9 of the valve-stem.

lis the float, attached on a cross-head, m, that is pivoted at n n onthe rods b, so that the float is free to rise and fall with the water- 55 line.

0 0 are arms projecting from the head m, and formed with ratchet-teethat their upper ends.

1) p are pins or lugs projecting from the pivoted arm 76 behind the arms0.

The float may be made of metal, glass, or other suitable material.

The admission of water into the bootA from the main cistern may be bymeans of a small hole or perforation, and no valve will be required.

In operation, the valve being down or closed and the boot filled to thewater-line, as shown in Fig. 1, the float will be elevated. In" thisposition the ratchet'arm k engages the teeth on the valve-stem, so thatwhen the rod t is raised the valve is also moved up and the waterescapes to the closet. In this raised position of the valve (shown inFig. 2) the ratchetteeth g are engaged to the ratchet-arms 0, and thevalve is thus sustained by the float. When the boot A is emptied, ornearly so, the float will fall, and the arms 0 being thus moved outwardcarry the arm 7; with them, and the valve is free to fall. v

This position is shown in Fig. 3. The water rising again in the bootrestores the first position of the parts.

Having thus described my invention, I claim DAVID THOMPSON.

Witnesses:

GEO. I). WALKER, 0. SEDGWIOK.

as new and desire to secure byLetters Patent 8 5

